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    I have these equations and I don't know how to go about solving them:
    x + y + z = 1
    (a + 1)x + y + (a2 + a)z = 1
    (a − 2)x + (a − 2)y − az = b

    Where a,b are real numbers. Could somebody please help.

    Thanks
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    You could use Gaussian elimination or find the inverse of the appropriate 3x3 matrix.
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    Thanks, how would I begin going about Gaussian Elimination?
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    I could latex up a whole example or I could refer you to Wikipedia. Let me see, which will it be.....
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    LaTeX, LaTeX, LaTeX!!!

    :ninja:
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    Sorry LaTex
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    Lol cool. I know how to use Gaussian elimination but I'm just not very good at it...
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    (Original post by Shadow!)
    Lol cool. I know how to use Gaussian elimination but I'm just not very good at it...
    If you get stuck post your working...someone is sure to help.
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    (Original post by rnd)
    Sorry LaTex
    Unless I'm mistaken, along with a great many others, it is the capital Greek letter chi.
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    I've got a hell of a lot of workings and it'd be hard to post too. But I get z=(b-a+2)/a, sound ok?
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    (Original post by D-Day)
    Unless I'm mistaken, along with a great many others, it is the capital Greek letter chi.
    Show me how please...
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    (Original post by rnd)
    Show me how please...
    "LaTeX (pronounced Latec - the x is actually a chi symbol)"

    From the Wiki.
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    (Original post by D-Day)
    "LaTeX (pronounced Latec - the x is actually a chi symbol)"

    From the Wiki.
    Thanks
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    I realize I am far too pedantic sometimes. It's an affliction.
 
 
 
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Updated: November 10, 2008
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